|
Problem IC69009
|
Status: Closed |
STATISTICAL AND REGRESSION AGGREGATE FUNCTIONS SHOULD RETURN DECFLOAT IN NUMBER COMPATIBILITY MODE |
| product: |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 |
| Problem description: |
In NUMBER compatibility mode, the following statistical and
regression functions incorrectly return INTEGER, BIGINT or
DOUBLE where they should return DECFLOAT. 'integer' below means
SMALLINT, INTEGER or BIGINT:
AVG( SMALLINT or INTEGER ) returns INTEGER
AVG( BIGINT ) returns BIGINT
CORRELATION ( either argument is integer ) returns DOUBLE
COVARIANCE( either argument is integer ) returns DOUBLE
STDDEV( integer ) returns DOUBLE
VARIANCE( integer ) returns DOUBLE
REGR_SLOPE( either argument is integer ) returns DOUBLE
REGR_ICPT( either argument is integer ) returns DOUBLE
REGR_INTERCEPT( either argument is integer ) returns DOUBLE
REGR_R2( either argument is integer ) returns DOUBLE
REGR_AVGX( ..., integer ) returns DOUBLE
REGR_AVGY( integer, ... ) returns DOUBLE
REGR_SXX( ..., integer ) returns DOUBLE
REGR_SYY( integer, ... ) returns DOUBLE
REGR_SXY( either argument is integer ) returns DOUBLE |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* NUMBER compatibility mode *
****************************************************************
* PROBLEM DESCRIPTION: *
* In NUMBER compatibility mode, the following statistical and *
* *
* regression functions incorrectly return INTEGER, BIGINT or *
* *
* DOUBLE where they should return DECFLOAT. 'integer' below *
* means *
* SMALLINT, INTEGER or BIGINT: *
* *
* *
* *
* AVG( SMALLINT or INTEGER ) returns INTEGER *
* *
* AVG( BIGINT ) returns BIGINT *
* *
* CORRELATION ( either argument is integer ) returns DOUBLE *
* *
* COVARIANCE( either argument is integer ) returns DOUBLE *
* *
* STDDEV( integer ) returns DOUBLE *
* *
* VARIANCE( integer ) returns DOUBLE *
* *
* REGR_SLOPE( either argument is integer ) returns DOUBLE *
* *
* REGR_ICPT( either argument is integer ) returns DOUBLE *
* *
* REGR_INTERCEPT( either argument is integer ) returns *
* DOUBLE *
* REGR_R2( either argument is integer ) returns DOUBLE *
* *
* REGR_AVGX( ..., integer ) returns DOUBLE *
* *
* REGR_AVGY( integer, ... ) returns DOUBLE *
* *
* REGR_SXX( ..., integer ) returns DOUBLE *
* *
* REGR_SYY( integer, ... ) returns DOUBLE *
* *
* REGR_SXY( either argument is integer ) returns DOUBLE *
* *
* Migration notes: *
* *
* Any application that depends on the wrong column type may *
* have to be altered to support the new DECFLOAT return type. *
* *
* Any view created prior to installing this fix that has a *
* result column that depends on one of the above functions *
* will continue to return the wrong type until the view is *
* regenerated or dropped and recreated. A view is regenerated *
* when an underlying table is altered. *
* *
* Any materialized query table (MQT) created prior to *
* installing this fix that has a result column that depends on *
* one of the above functions will no longer be used for query *
* optimization until the MQT is dropped and recreated. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 version 9.5.6 *
**************************************************************** |
| Local Fix: |
Cast the function argument(s) to DECFLOAT. |
| available fix packs: |
DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Problem was first fixed in DB2 version 9.5 Fix Pack 6 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC69031 IC69032
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 03.06.2010
22.06.2010
22.06.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.5.6,
9.5.FP6
|
| Problem solved according to the fixlist(s) of the following version(s) |
